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CoRoT-8b 
Summary
CoRoT-8b is a transiting exoplanet orbiting the K-type main sequence star CoRoT-8 1,050 light years away in the equatorial constellation Aquila. The planet was discovered in April 2010 by the CoRoT telescope.
 CoRoT-8b compared to Jupiter and Neptune. | |
| Discovery[1] | |
|---|---|
| Discovered by | Borde et al. |
| Discovery site | CoRoT space telescope |
| Discovery date | 12 April 2010 |
| Transit | |
| Orbital characteristics | |
| 0.0636 ± 0.0014 AU (9,510,000 ± 210,000 km)[2] | |
| Eccentricity | <0.19[3] |
| 6.212445±0.000007 d[2] | |
| Inclination | 88.18°±0.08°[2] |
| 2,454,239.03317±0.00049 JD[2] | |
| Semi-amplitude | 27.6+5.8 −4.7 m/s[3] |
| Star | CoRoT-8 |
| Physical characteristics | |
Mean radius | 0.619+0.016 −0.017 RJ[2] |
| Mass | 0.218±0.034 MJ[2] |
Mean density | 1.1±0.2 g/cm3[2] |
| Temperature | 870 ± 14 K (1,106.3 ± 25.2 °F; 596.9 ± 14.0 °C)[2] |
Discovery edit
This planet was discovered using the transit method, which detects planet via eclipses. The discovery paper's abstract states that CoRoT-8b is extremely dense compared to Saturn.
Properties edit
CoRoT-8b has 21.8% Jupiter's mass, and due to its close orbit, a radius 61.9% that of Jupiter. This classifies the planet as a hot Saturn. Despite the bloated radius, the planet is extremely dense, with it being 1.1 times greater than water's; CoRoT-8b has a temperature of 870 K from its 6-day orbit.
References edit
- ^ Bordé, P.; et al. (September 2010). "Transiting exoplanets from the CoRoT space mission. XI. CoRoT-8b: a hot and dense sub-Saturn around a K1 dwarf". Astronomy and Astrophysics. 520: A66. arXiv:1008.0325. Bibcode:2010A&A...520A..66B. doi:10.1051/0004-6361/201014775. ISSN 0004-6361. S2CID 56357511.
- ^ a b c d e f g h Raetz, St; Heras, A. M.; Fernández, M.; Casanova, V.; Marka, C. (February 2019). "Transit analysis of the CoRoT-5, CoRoT-8, CoRoT-12, CoRoT-18, CoRoT-20, and CoRoT-27 systems with combined ground- and space-based photometry". Monthly Notices of the Royal Astronomical Society. 483 (1): 824–839. arXiv:1812.01536. Bibcode:2019MNRAS.483..824R. doi:10.1093/mnras/sty3085. ISSN 0035-8711.
- ^ a b Bonomo, A. S.; et al. (June 2017). "The GAPS Programme with HARPS-N at TNG . XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets". Astronomy and Astrophysics. 602: A107. arXiv:1704.00373. Bibcode:2017A&A...602A.107B. doi:10.1051/0004-6361/201629882. ISSN 0004-6361. S2CID 118923163.